The mean annual HSEB ET (mm/day/year) for 2021. To obtain actual ET values (in mm/day/year), each pixel should be scaled by a factor of 0.001. HSEB-ET is a globally consistent, monthly ET dataset at 100-meter spatial resolution covering the period 1990-2021. The dataset was generated using the Hybrid Single-source Energy Balance (HSEB) model implemented on the Google Earth Engine platform, leveraging over four million Landsat thermal and optical images, dynamic land cover information from ESA CCI, and ERA5-Land reanalysis weather data.